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公开(公告)号：US20120170439A1
公开(公告)日：2012-07-05
申请号：US13410313
申请日：2012-03-02
IPC分类号： G11B7/135
CPC分类号： G02B5/1876 , G11B7/1353 , G11B7/1374 , G11B7/1376 , G11B7/139 , G11B7/13922 , G11B2007/0006
摘要： An objective lens element having excellent compatibility with optical discs having different base material thicknesses is provided. The objective lens element has optically functional surfaces on an incident side and an exit side. At least either one of the optically functional surfaces on the incident side and the exit side includes a diffraction portion which satisfies at least either one of the following formulas (1) and (2): θ1×θ2
摘要翻译： 提供了具有与具有不同基材厚度的光盘的良好兼容性的物镜元件。 物镜元件在入射侧和出射侧具有光学功能表面。 入射侧和出射侧的光学功能表面中的至少任一方包括满足下述式（1）和（2）中的至少一个的衍射部：＆lt; 1＆gt; 2＆lt; 0（“ ד表示乘法）（1），（sin＆thetas; 2）/λ22= - （sin＆amp; tt; 1）/λ1（2），其中θ是具有提供最大值的衍射级的光束的衍射角 在波长λ1下的衍射效率和＆amp; Thetas; 2是具有在波长λ2下提供最大衍射效率的衍射级的光束的衍射角。
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公开(公告)号：US20120163157A1
公开(公告)日：2012-06-28
申请号：US13411656
申请日：2012-03-05
IPC分类号： G11B7/1374 , G02B5/18
CPC分类号： G11B7/1275 , G02B3/08 , G02B5/1866 , G02B5/1876 , G02B13/16 , G02B27/283 , G02B27/4216 , G02B27/4238 , G02B27/4266 , G11B7/1353 , G11B7/1367 , G11B7/13922 , G11B2007/0006
摘要： An optical element which can be shared by three wavelengths for BD, DVD, and CD and which is easily manufactured is provided. An objective lens system includes an optical element 1A and a converging lens element 1B. A first surface of the optical element 1A on an incident side is concentrically divided into a region 11 including a rotational symmetry axis, a region 12, and a region 13. On the optical element 1A, a periodic stair-like diffraction structure and a periodic sawtooth-like diffraction structure are provided. A second surface of the optical element 1A is divided into a region 21 including a rotational symmetry axis, a region 22, and a region 23. On the region 21, a sawtooth-like diffraction structure is provided. The converging lens element 1B converges light having passed through the optical element 1A, to form a spot on an information recording surface of an optical disc.
摘要翻译： 提供了可以由BD，DVD和CD的三个波长共享并且容易制造的光学元件。 物镜系统包括光学元件1A和会聚透镜元件1B。 入射侧的光学元件1A的第一表面被同心地分成包括旋转对称轴，区域12和区域13的区域11.在光学元件1A上，周期性阶梯状衍射结构和周期性 提供锯齿状衍射结构。 光学元件1A的第二表面被分成包括旋转对称轴，区域22和区域23的区域21.在区域21上，提供锯齿状衍射结构。 会聚透镜元件1B会聚已经通过光学元件1A的光，以在光盘的信息记录表面上形成点。
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3.发明申请Optical pickup lens device and information recording and reproducing device using the same 有权光学拾取镜头装置及其使用的信息记录和再现装置公开(公告)号：US20060164735A1
公开(公告)日：2006-07-27
申请号：US11385829
申请日：2006-03-22
IPC分类号： G02B9/00
CPC分类号： G11B7/13925 , G11B7/1353 , G11B7/1367 , G11B7/1376
摘要： An optical pickup lens device includes, in the order from the light source side, collimating means for converting a bundle of rays into parallel rays or predetermined convergent or divergent rays, the collimating means being movably held along a direction of an optical axis of a bundle of rays emitted from a light source; an aberration correcting element for allowing a bundle of rays emitted from the collimating means to be transmitted therethrough; and an objective lens element having a numerical aperture of 0.8 or more, and converging a bundle of rays coming from the aberration correcting element onto the information recording medium to form a spot. The aberration correcting element and the objective lens element are integrally held together in a direction orthogonal to the optical axis so as to perform tracking on the information recording medium, and satisfy predetermined conditions.
摘要翻译： 一种光学拾取透镜装置，从光源侧依次包括用于将光束变换为平行光或预定的会聚或发散光线的准直装置，准直装置沿着光束的光轴的方向可移动地保持 从光源发射的光线; 用于允许从准直装置发射的光束穿过其中的像差校正元件; 以及具有0.8以上的数值孔径的物镜元件，并且将来自像差校正元件的光束会聚在信息记录介质上以形成点。 像差校正元件和物镜元件在与光轴正交的方向上一体地保持在一起，以在信息记录介质上执行跟踪，并满足预定条件。
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公开(公告)号：US08611199B2
公开(公告)日：2013-12-17
申请号：US13248042
申请日：2011-09-29
IPC分类号： G11B7/135
CPC分类号： G11B7/1374 , G02B5/1814 , G02B5/1876 , G11B7/1275 , G11B7/1353 , G11B7/13922 , G11B2007/0006
摘要： An optical pickup device is provided which is compatible with at least two types of optical disc standards having different NAs and which controls an effective NA when a light beam for an optical disc standard having a relatively small NA is converged, thereby forming a desired spot. An inner part 131B and an outer part 131F of an objective lens element 143 are provided with diffraction structures different from each other. A condition (1), DO11×DO12>0, and a condition (2), DO21×DO22
摘要翻译： 提供了一种光拾取装置，其与具有不同NAs的至少两种类型的光盘标准兼容，并且当具有相对较小的NA的光盘标准的光束会聚时，控制有效NA，从而形成所需的斑点。 物镜143的内部部分131B和外部部分131F设置有彼此不同的衍射结构。 满足条件（1），DO11×DO12> 0和条件（2），DO21×DO22 <0（DO11（DO21）是衍射效率最高的衍射光束的衍射级别 由内部衍射结构衍射的波长λ1（λ2）; DO12（DO22）是由衍射结构衍射的波长λ1（λ2）的光束之间衍射效率最高的衍射光束的衍射级数 在外部）。
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公开(公告)号：US20080130467A1
公开(公告)日：2008-06-05
申请号：US11819204
申请日：2007-06-26
IPC分类号： G11B7/00
CPC分类号： G11B7/1374 , G11B7/1275 , G11B7/1353 , G11B2007/0006 , G11B2007/13722
摘要： An objective optical system 10 includes a diffraction plane 15 for separating a laser light beam into at least 0th-order diffracted light and 1st-order diffracted light. The objective optical system 10 is configured to focus the 0th-order diffracted light onto an information recording surface 22a of a first information recording medium 20a and the 1st-order diffracted light onto an information recording surface 22b of a second information recording medium 20b and meet the following conditional expression (1): η0>η1 (1) wherein η0 is the diffraction efficiency of the 0th-order diffracted light and η1 is the diffraction efficiency of the 1st-order diffracted light.
摘要翻译： 物镜光学系统10包括用于将激光束分离成至少0级次级衍射光和1级次级衍射光的衍射平面15。 物镜光学系统10被配置为将第0个/次级衍射光聚焦到第一信息记录介质20a的信息记录表面22a上，并且第一信号记录介质 将衍射光分级到第二信息记录介质20b的信息记录表面22b上，并满足以下条件表达式（1）：<？in-line-formula description =“In-line Formulas”end =“lead”？> η（1）<βin-line-formula description =“In-line Formulas”end =“tail”？>其中eta <0> 是第0级衍射光的衍射效率，而第1级衍射光的衍射效率是第1级次衍射光的衍射效率 衍射光。
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6.发明授权公开(公告)号：US07221521B2
公开(公告)日：2007-05-22
申请号：US11385829
申请日：2006-03-22
CPC分类号： G11B7/13925 , G11B7/1353 , G11B7/1367 , G11B7/1376
摘要： An optical pickup lens device includes, in the order from the light source side, a collimating lens for converting a bundle of rays into parallel rays or predetermined convergent or divergent rays, the collimating lens being movably held along a direction of an optical axis of a bundle of rays emitted from a light source; an aberration correcting element for allowing a bundle of rays emitted from the collimating lens to be transmitted therethrough; and an objective lens element having a numerical aperture of 0.8 or more, and converging a bundle of rays coming from the aberration correcting element onto the information recording medium to form a spot. The aberration correcting element and the objective lens element are integrally held together in a direction orthogonal to the optical axis so as to perform tracking on the information recording medium, and satisfy predetermined conditions.
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7.发明申请公开(公告)号：US20060164734A1
公开(公告)日：2006-07-27
申请号：US11385765
申请日：2006-03-22
IPC分类号： G02B9/00
CPC分类号： G11B7/13925 , G11B7/1353 , G11B7/1367 , G11B7/1376
摘要： An optical pickup lens device includes, in the order from the light source side, collimating means for converting a bundle of rays into parallel rays or predetermined convergent or divergent rays, the collimating means being movably held along a direction of an optical axis of a bundle of rays emitted from a light source; an aberration correcting element for allowing a bundle of rays emitted from the collimating means to be transmitted therethrough; and an objective lens element having a numerical aperture of 0.8 or more, and converging a bundle of rays coming from the aberration correcting element onto the information recording medium to form a spot. The aberration correcting element and the objective lens element are integrally held together in a direction orthogonal to the optical axis so as to perform tracking on the information recording medium, and satisfy predetermined conditions.
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公开(公告)号：US08760989B2
公开(公告)日：2014-06-24
申请号：US13414724
申请日：2012-03-08
IPC分类号： G11B7/00
CPC分类号： G02B3/08 , G02B5/1876 , G02B2005/1804 , G11B7/1353 , G11B7/1367 , G11B7/1374 , G11B7/139 , G11B7/13922 , G11B2007/0006
摘要： An objective lens element which has excellent compatibility with optical discs having different base material thicknesses is provided. An objective lens element 141 has optically functional surfaces on an incident side and an exit side. Either one of the optically functional surfaces is divided into an inner part 131B including a rotational symmetry axis and an outer part 131F which is a ring-shaped region surrounding the inner part 131B. On the inner part 131B, a plurality of discontinuous steps are provided. The plurality of steps change in height in the same direction from the optical axis toward the outer part, and each of the steps causes a constant optical path difference longer than the wavelength λ1 to the first incident light beam 61 and causes a constant optical path difference shorter than the wavelength λ2 to the second incident light beam 62.
摘要翻译： 提供了具有与具有不同基材厚度的光盘的良好兼容性的物镜元件。 物镜141具有在入射侧和出射侧的光学功能表面。 光学功能表面中的任一个被分成包括旋转对称轴的内部部分131B和围绕内部部分131B的环形区域的外部部分131F。 在内部部分131B上设有多个不连续的步骤。 多个步骤在与光轴朝向外部的相同方向上的高度变化，并且每个步骤对于第一入射光束61产生比波长λ1长的恒定光程差，并且导致恒定的光程差 比第二入射光束62的波长λ2短。
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公开(公告)号：US08406110B2
公开(公告)日：2013-03-26
申请号：US13410313
申请日：2012-03-02
IPC分类号： G11B7/135
CPC分类号： G02B5/1876 , G11B7/1353 , G11B7/1374 , G11B7/1376 , G11B7/139 , G11B7/13922 , G11B2007/0006
摘要： An objective lens element having excellent compatibility with optical discs having different base material thicknesses is provided. The objective lens element has optically functional surfaces on an incident side and an exit side. At least either one of the optically functional surfaces on the incident side and the exit side includes a diffraction portion which satisfies at least either one of the following formulas (1) and (2): θ1×θ2
摘要翻译： 提供了具有与具有不同基材厚度的光盘的良好兼容性的物镜元件。 物镜元件在入射侧和出射侧具有光学功能表面。 入射侧和出射侧的光学功能面中的至少任一方包括满足下述式（1）和（2）中的至少任一个的衍射部：＆lt; 1×＆Thetas; 2 <0（× 表示乘法）（1），（sin＆hetas; 2）/λ22= - （sin＆hetas; 1）/λ1（2），其中，θ是具有提供最大衍射效率的衍射级的光束的衍射角 在波长λ1处，并且λ是具有在波长λ2处提供最大衍射效率的衍射级的光束的衍射角。
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公开(公告)号：US20120170122A1
公开(公告)日：2012-07-05
申请号：US13414724
申请日：2012-03-08
IPC分类号： G02B5/18
CPC分类号： G02B3/08 , G02B5/1876 , G02B2005/1804 , G11B7/1353 , G11B7/1367 , G11B7/1374 , G11B7/139 , G11B7/13922 , G11B2007/0006
摘要： An objective lens element which has excellent compatibility with optical discs having different base material thicknesses is provided. An objective lens element 141 has optically functional surfaces on an incident side and an exit side. Either one of the optically functional surfaces is divided into an inner part 131B including a rotational symmetry axis and an outer part 131F which is a ring-shaped region surrounding the inner part 131B. On the inner part 131B, a plurality of discontinuous steps are provided. The plurality of steps change in height in the same direction from the optical axis toward the outer part, and each of the steps causes a constant optical path difference longer than the wavelength λ1 to the first incident light beam 61 and causes a constant optical path difference shorter than the wavelength λ2 to the second incident light beam 62.
摘要翻译： 提供了具有与具有不同基材厚度的光盘的良好兼容性的物镜元件。 物镜141具有在入射侧和出射侧的光学功能表面。 光学功能表面中的任一个被分成包括旋转对称轴的内部部分131B和围绕内部部分131B的环形区域的外部部分131F。 在内部部分131B上设有多个不连续的步骤。 多个步骤在与光轴朝向外部的相同方向上的高度变化，并且每个步骤对于第一入射光束61产生比波长λ1长的恒定光程差，并且导致恒定的光程差 比第二入射光束62的波长λ2短。
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